Pesticides for Powdery Mildew (Peaches and Nectarines)

Peach

Stage of Development: Petal Fall
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre...
pydiflumetofen + difenoconazole (Miravis Duo) 332067 + 31 L405 ml12 hours0 daysMax 2 applications, then switch to a non-Group 7 and 3 fungicide. Application interval: 7 - 14 days.

Stage of Development: Petal Fall

Powdery Mildew (Peaches and Nectarines)

1 Product Choices

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Stage of Development: Husk Fall
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre...
myclobutanil (Nova 40WP) 223993340 g140 g12 h-12 days1Limit use of group 3 fungicides (Indar, Nova, Topas, Jade, Tilt, Quash) to 2 sprays/season. Rotate with fungicides from different groups. 12 days REI for thinning.
penthiopyrad (Fontelis) 3033171.0-1.75 L405-709 mL12 h0Do not apply more than 2 times per season. Use high rate for high disease pressure.
boscalid + pyraclostrobin (Pristine WG) 279857 + 11750 g - 1 kg304 g - 405 gdry - 10 days0Limit sprays of class 11 fungicides to 2 per season for resistance management. 10 days REI for thinning.
trifloxystrobin (Flint) 3061911140-280 g57-113 g12 h - 4 days1Suppression only. Use the higher rate for high disease pressure. Limit sprays of Group 11 fungicides (Flint, Cabrio, Pristine) to 2 per season. 4 days REI for thinning.
mineral oil (Purespray Green) 27666NC10 L4 L12 h0For suppression of powdery mildew, apply in a minimum of 1000 L water/ha at 10-14 day intervals. Do not use in combination with or within 14 days of sulphur or captan.
potassium bicarbonate (MilStop) 28095NC2.8-5.6 kg1.1-2.2 kg4 h0Suppression only. Do not mix with other pesticides or fertilizers.
metrafenone (Vivando) 29765U8750 mL - 1.12 L304 - 453 mL12 h7Apply prior to onset of disease and at 14-21 day intervals. Maximum of 2 sprays/season.
metconazole (Quash 30402)3245-280 g99-113 g12 h - 9 days14Suppression of powdery mildew only. Maximum one application/season. REI of 9 days is for thinning.
fluopyram + trifloxystrobin (Luna Sensation) 321077+11300-400 mL121-162 mL12 h1 dayUse higher rate for high disease pressure. Rotate with fungicides from other groups. Limit use of group 11 fungicides to 2 applications per season.
mefentrifluconazole (Cevya) 3340530.25 - 0.375 L0.1 - 0.15 L12 hours0Do not make more than 2 sequential applications before alternating to a non-group 3 fungicide registered for the same use. Begin applications prior to disease development. Apply an additional applic. at an interval of 7 - 14 days if disease persists or weather conditions are favourable for disease development.
pyraclostrobin + fluxapyroxad (Merivon) 339517 + 110.3 - 0.4 L0.12 - 0.16 L12 h - 12 days1 day (hand harvest)Limit sprays of Group 11 fungicides to 2 sprays/season. REI's: hand thinning - 12 days, hand harvesting - 1 days, mechanical harvesting and all other activities - 12 hours.
sulphur (Cosavet DF Edge 31869, Kumulus 18836, Microthiol 29487M27.0 kg2.8 kg24 h1May cause injury during hot weather. Repeat in 10 - 14 days. Do not apply more than 8 applications per season. The Cosavet is not registered for use on nectarines. Note: apricots are sensitive to sulphur applications - do not spray sulphur near apricot trees.
fenazaquin (Magister SC) 3454421 + 391.75 - 2.63 L0.7 - 1.1 L12 h - 17 days10 daysToxic to bees. Avoid application during bloom. Maximum number of applications: 1
Notes: Rotate fungicides from different groups for resistance management.

Stage of Development: Husk Fall

Powdery Mildew (Peaches and Nectarines)

13 Product Choices

1 Notes

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Stage of Development: Summer
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre...
pydiflumetofen + difenoconazole (Miravis Duo) 332067 + 31 L405 ml12 hours0 daysMax 2 applications, then switch to a non-Group 7 and 3 fungicide. Application interval: 7 - 14 days.

Stage of Development: Summer

Powdery Mildew (Peaches and Nectarines)

1 Product Choices

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Apricot

Stage of Development: Husk Fall
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre...
mefentrifluconazole (Cevya) 3340530.25 - 0.375 L0.1 - 0.15 L12 hours0Do not make more than 2 sequential applications before alternating to a non-group 3 fungicide registered for the same use. Begin applications prior to disease development. Apply an additional applic. at an interval of 7 - 14 days if disease persists or weather conditions are favourable for disease development.

Stage of Development: Husk Fall

Powdery Mildew (Peaches and Nectarines)

1 Product Choices

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Funding for this project was provided in part by Agriculture and Agri-Food Canada and the B.C. Ministry of Agriculture through programs delivered by the Investment Agriculture Foundation of B.C.

Agriculture and Agri-Food Canada, the B.C. Ministry of Agriculture and the Investment Agriculture Foundation of BC, are pleased to participate in the delivery of this project. We are committed to working with our industry partners to address issues of importance to the agriculture and agri-food industry in British Columbia. Opinions expressed in this publication are those of the BCFGA and not necessarily those of the Investment Agriculture Foundation, the B.C. Ministry of Agriculture or Agriculture and Agri-Food Canada.

Integrated Fruit Production Guide | Questions, comments, or concerns? Send them to us.